Sliding-door lock



April 24,1928.

M MARTINEK SLIDING DOOR LOCK Filed March 1927 3 Sheets-Sheet 1 zfevziorx v April 24, 192&

M. MARTINEK SLIDING DOOR LOCK Filed March '7. 1927 5 Sheets-Sheet 2 April 24, 192&

M. MARTINEK SLIDING DOOR LOCK Filed March '7. 1927 5 Sheets-Sheet 3 Patented Apr. 24, 1928.7

; UNITED STATES WORKS, INC., OF CHICAGO, ILLINOIS, A CORPQRATION OF ILLINOIS.

SLIDING-DOOR LOCK.

Application filed March 7, 1927; Serial'No. 173,402.

a handle-knob, on its inner face, and no parts. projecting from its edge to catch or'tear the clothing of the personpassing through the open doorway; andone which has the keyhole of the tumbler look so arranged as to avoid heretofore, objectionable features, in: cluding entrance therein of foreign sub stances which clogandmake the tumblers inoperative. 7

These and other objects. and the advantages of the invention will more fully appear as I proceed, -the invention consisting of the parts and combination of parts illustrated and described and more particularly pointed out in the claims hereto appended.

In the drawings:

Figure 1 is a side elevation of a portion of a door with a lock embodying my invention applied thereto.

Figure 2 is a side elevation of the portion of the door jamb'with whichthe door cooperates. T I

Figure 3 is a transverse, sectional view of the door and lock, the section being taken in the planes of the dotted line 3-3 on Fig ure 1. a

Figure-4 is a transverse, sectional view of a part of the door tjamb, the section being inst above the keeper plate and on the 'line- 7 p lation are apair of hooked-end lever arms 7 4-4 of Figure 2.

Figure 5 shows the parts illustrated vin Figures 3 and 4, when brought together in locked relation. 1

Figure 6 is a perspective view of the keeper plate on the door jamb.

' Figure 7 is a view in elevation of the 1nside of the lock, showing the parts in'locked position. s

Figure 8-is a similar v1ew showmg the same parts in the unlocked position, when actuated by a knob on one outside face of the lock.; r V

Figure 9 is a similar view showing the same parts the unlocked position-when actuated by a key inserted into the look from the opposite side of the lock.

Figure 106 is a transverse, sectional view of the lock, the section beingtaken in the horizontal. plane indicated by the dotted line 1010 on Figure 9; and v 1 I Figure 11 is a longitudinal sectional view of the lock, the section being taken in the vertical plane indicated by the dotted line 1111 on Figure 9. v I Figure 12 is-a sectional view of a detail.

In said drawings, a door is indicate-(lat A, a door jamb at B, the'lock as'a whole at;

C, and the keeper, as a whole, at D. j The lock comprises two casing plates 1,2, secured together by screws (not shown) or in any suitable manner, and spaced apar'tby' slde and end flanges 4, so as to form,'to-;

gether, acompletehousing for the "working parts. V

The plate 1 is formed with an annular depression 5' in oneface,-near one 'end,and-its wall is centrally'apertured at 6 to receive the.

stem 7 of'a knob 8. The knob is-located in the depression 5. An operating member or wing 9 inv the casing is mounted upon the knob stem 7 and secured thereto by a screw 10 or other convenient means, whereby the knob on the outside of the loclnwhen turned,

will actuate the wing'9 on the inside of the lock.

PATENT. I OFFICE;

MICHAEL MARTINEK, or LYONS, ILLINOIS, ASSI'GNOR "r0 wEsTER wIRE @130! The casing plate Qis provided with an I apertured hub 11, in which is securedbyscrew threads or other convenient means, a.

lock' indicated as a whole at 12, provided with one or more movablewings 13 withinthe casing, and actuated by the insertion of a suitableokey into the keyhole 14-of the lock 12.

Within the casing and in spaced apzirt re- 15, 15, whose action is that of a'lever of the second class, each arm being mounted at lever-arms' 15, 15, to assume the closed or normal position shown in Figure 7 in this instance, the means employed are a pair of springs 19, 19. Through one Wall. of the side flange 1 oi the casing, that is through the edge of the lock C, is a longitudinally disposed opening 20 through which the hooked ends 17 of the lever arms 15 project in position to be engaged by the keeper D.

Secured to the inside of the casing and preferably to the inside of the plate 1, is a transversely disposed bolt or stud '21, upon Which are mounted, in superposed relation, independently; acting can'i-arms 22 and 23, capable of pivotal movement about the, stud 21 =Tl1ear1n22 is provided at its forward end =with; a detent or tappetQt adapted to engage the, lnside margin 0i" one arm 15, and

is provided also witha cam portion 25 adaptedtoengage the inside margin ofthe other ;;arm 15. The rear portion of the arm 22 is adapted to be engaged byuthe key-ac- I tuated Wing 13, a shouldered flange'25 be ing provicled;for that purpose. :VVhen the wing: 13-vis rotated, the flanged end-25s, is moved'so that theyavrm 2:2 swings about the pivotal stud 21. VV-hen power-is applied to the twolever arms 15, 15, by the movement ot; the-,-tappet-. 24 against onearm and the-- cam25against the other arm, said levers are moved in opposite directions,. from the locked; positionishown in Figure 7 i to the unlocked or open position shown in Figure 9.-

. The? arm; 23'is provided at its forward .end with aqdetent or tappetQG, adapted to engage the inside margin-of one of; the leverarms;;15,--and-is provided also; with a cam portion 27 adaptedto engage the inside marginrof the-other arm 15. The rear portionofrthe camarm 231s provided with a cam portion 28 adapted to be en-gaged'bythe knob-actuated wing 9. One ot-the lever arms 29 and the part of the cam arm 23 which carriesgthe-tcam 28 extends in the-recess 29 and transverselyrof the-lever 15. The thickness of the arms'22 and23 which are shown in superposed pivotal position about-the stud= 21 ;is such, that when the wing 9 actuates the camw28,-theicam arm23 alone acts asi-power through the-cam 27 and detent 26 to'spread *apart the levers 15, 15, and release the keeper;

thedoorvjam'b in a: different but adjacent ver-v tical plane from the plane of-the doorjamb. Such; an-arran-gement isfcommonly and de-- sira-blyuused in the case ofisliding doors for bank ltellers l ;.cages-, where it is desirable to secure thekeeperrl) tothe door B in the channel of a'suitable metal keeper 30, which in theinstance shown is vprovided with an attaching flange 31 morticed into the edge of the door as shown in Figure 6,"and suitably secured thereto by screws 32 or other suitable means. It will be noticed that the outer edge of the keeper D is-insid'e of-the vertical plane ofthe flange 315 The channel member .30 will of course be of suflicient width to accommodate the door A, in which the lock C is morticed, and of sufiiclent depth to permit the hook ends 01 the lock arms 15 toengage with dllClCldSPl in locking relation V p the keeper '1), when thedoor 1Sl31O11gl1t up i to thedoor jamb; as clearly shown in Figure 5. v v V j r In; bank tellers cages, the sliding doors usually have hunted movement,..providing limited space for persons to passbetween thev door-edge and the door jambw vIthis therefore essential: that the lockandwkeeper have: no. projecting partswhich may catchzxand. :tear' the clothing of persons passing through the door opening. Thedevice of' the presentin-L vention is-exceedingly eflicientwin this :rem

lbw/W111 be b d hy reference to Fig r 12, that the lock 12 is positioned sozthat the:

key Ei tmay be inserted with its long plain edge -edown and' guided.by the lower straight portion 36rofthe key hole 34, and

its fluted tumbler-engaging edge 37 upper} most. This isiipossiblev becauserxof the-Mar rangement of parts and. their location as shown and described, whereby-the position. ot-the tumblers will always :"bein w0rkable l b condition; a i

Assuming the door and door jamb are in the position shown in Figure/ 5, the. person desiring to iopen the-v-door from the-outside will insert thekey in the lock: 12, thereby operating the tumbler wing oravings-13, andthrough the action above described, thecam arm 22 will spread-apartthe-lever ar1ns' 15, 15, as indicated in Figure 11, thus disengaging the-locksends17 from the keeper 'D,

enabling; the person to slide the door A arwayfrom the door jainb B- and effect an entrance: The door being again closed, in the position shown in Figure -5,,the person being on the other sideanddesiring to open the door, will take hold of the knob 8,-slightly turn it to actuate the wing 9, and through'iithe cam:

arm spreadapart the -arms.15, 15,'.into

- the disengaged positionshown in Figure 8;

and then slide the door away from the jamb.

1 I clainras my invention: r A

1. A sliding door lock comprising a keeper memberand a casing 1nember, theacasing having an opening in one edge andprovided interiorly with a pair of lever arms having their movable .en'ds adapted foroperative locking engagement with .the keeperinember, means for-holding said arms normally in the locked position, a keyactuated device sec-uredtoone-side of the casing and a knob actuated device securedto the other side of the casing, a pivot in the casing between the lever arms, two lever devices mounted movably in superposed relation upon said pivot,

' and each adapted to engage and spread apart both lever arms, a Wing member connected with the knob actuated device to contact with and actuate one of said pivoted lever devices independently of the other pivoted actuating device.

2. A sliding door lock comprising a keeper member and a casing member, the casing having an opening in one edge and provided interiorly with a pair of lever arms having,

their movable ends adapted for operative locking engagement with the keeper member, means for holding said arms normally in the locked position, a key actuated device secured to one side of the casing and a knob actuated device secured to the other side of the casing, a pivot in the casing between the lever'arms, two lever devices mounted movably in superposed relation upon said pivot,

and each adapted to engage and spread apart both lever arms, a movable member of the key actuated device having operative connection with one of the pivoted lever devices s to actuate the same independently of the other lever device.

In testimony that I claim the foregoing as my invention I aflix my'signature, this Qndday of March, 1927.

I MICHAEL MARTINEK. 

